My experiences aren't turbo related, or at least I don't think so. I don't have any boost leaks either, what I fixed last night fixed the leak. I spent $50 on a smoke test and we didn't find any leaks which is good. It's actually so stout now that it is loosening the coil wire and now it's actually popping off.
I strapped the coil wire down and it's set to hit 18psi with the mbc, but it still bleeds down to about 12psi. I'm thinking the mbc is bad? Maybe the spring is too weak in there... It builds about 6-7psi off of the just the wastegate. Also it builds about 7 psi if you take the little barb with the hole in it out, but I can't get it over 7psi like that.
On the coil wire, this is my third one in 4 years; I've had them pop off before, maybe I need a new coil?